if its rum you like then get some zacapa or diplomatico reserva. http://www.thewhiskyexchange.com/P-4548.aspx http://www.thewhiskyexchange.com/P-4475.aspx Also chairmans reserve is fantastic value. http://www.thewhiskyexchange.com/P-9207.aspx
zacapa is the dugs baws when it comes to rum, diplomatico is a close second. chairmans reserve is fairly middle of the road quality wise but a good price for what it is.
yes it has a very complex taste so you cant take a big gulp like you would with other drinks, its best to sip and swish it around your mouth slightly to get all the flavours.
There are plenty of quality boxed wines. It also lasts for around 6 weeks whereas you need to finish a freshly opened bottle within a couple of days before it starts turning into vinegar.